Film member for electronic device

ABSTRACT

Disclosed is a film member for an electronic device capable of preventing malfunction of an electrostatic touch screen and expressing a design characteristic of unique texture. The film member used for the electrostatic touch screen of the electronic device having the electrostatic touch screen, includes: a transparent film; and a window decoration made of a metallic material and provided on one surface of the transparent film, wherein the window decoration includes a plurality of metallic thin film figures which are electrically insulated from each other.

TECHNICAL FIELD

The present invention relates to a film member for an electronic device,and more particularly, to a film member for an electronic device havinga window decoration made of a metallic material capable of preventingmalfunction of a touch screen.

BACKGROUND ART

Generally, in devices installed with a touch screen in electronicdevices, for example, a smart phone, a tablet, a laptop, a monitor, andthe like having a touch screen, a transparent cover is attached to thefront surface of the touch screen.

Further, a window decoration may be formed at the edge of thetransparent cover. The window decoration may be provided as a use ofcovering non-transparent components disposed therebelow, for example, awire member (not illustrated) and a circuit board (not illustrated)which are disposed at the edge of a touch panel sensor, and formed by ageneral printing process and the like.

Meanwhile, recently, the performance of the electronic device isimportant, but an external design of the electronic device us equallyimportant. For example, according to a survey focused on purchasers, itis shown that the first thing considered when purchasing products isjust a ‘design’. It is a result that the external design of the producthas a large effect on the purchase of the product as much as that.

The window decoration plays a basic role of covering the non-transparentcomponents disposed therebelow and may express the external design ofthe electronic device. To this end, recently, various studies for windowdecoration materials capable of having unique design effects have beenconducted so as to satisfy the rapidly changing needs of consumers.

As an example, recently, various attempts for forming the windowdecoration by color printing or with novel materials such as oxidemulticoating have been conducted.

Meanwhile, when a metallic material is used as the material of thewindow decoration, a unique design characteristic of metal texture maybe expressed by using the window decoration. However, when the windowdecoration is formed of a metallic material, there is a problem in thatmalfunction of the touch screen is caused by a unique electriccharacteristic of the metal.

Particularly, in the case where the window decoration made of a metallicmaterial is used, when a touch operation is performed at the edge of anelectrostatic touch screen adjacent to the window decoration, there areproblems in that it is difficult to accurately sense the touch operationof the electrostatic touch screen by an electric effect of the windowdecoration and undesired malfunction is caused.

Further, since a plurality of wire members transferring a touch signalof the electrostatic touch screen is disposed below the metallic windowdecoration, even in the case where the touch operation is performed atthe center other than the edge of the electrostatic touch screen, thereare problems in that interference occurs by the electric characteristicof the window decoration or malfunction occurs by transferring thesignal to another undesired wire member, when the signal by the touchoperation is transferred according to a specific wire member.

Accordingly, recently, various studies for the window decoration capableof preventing malfunction of the touch screen and expressing the uniquedesign characteristic have been conducted, but are not yet sufficientand thus the development thereof has been required.

DISCLOSURE Technical Problem

The present invention is directed to provide a film member for anelectronic device capable of preventing malfunction of a touch screenand expressing a design characteristic of unique texture.

Particularly, the present invention is also directed to provide a filmmember for an electronic device having a window decoration capable ofexpressing a design characteristic of metal texture by using a metallicmaterial and preventing malfunction of an electrostatic touch screen.

Further, the present invention is also directed to provide a film memberfor an electronic device capable of preventing reflection of lightcaused by the metal window decoration by forming finely curved parts anda flat part on the transparent film and expressing an advanced andunique design effect by reflecting the light at the outermost edge.

Further, the present invention is also directed to provide a film memberfor an electronic device capable of preventing malfunction of anelectrostatic touch screen by preventing charges from being accumulatedin the metal window decoration.

Further, the present invention is also directed to provide a film memberfor an electronic device capable of improving a window decoration effectby forming the window decoration in a multilayered metal structure.

Further, the present invention is also directed to provide a film memberfor an electronic device capable of improving a product value,contributing to the advanced product, and enhancing the satisfaction ofconsumers.

Technical Solution

One aspect of the present invention provides a film member for anelectronic device in the film member used for an electrostatic touchscreen in the electronic device having the electrostatic touch screen,the film member comprising: a transparent film; and a window decorationmade of a metallic material and provided on one surface of thetransparent film, in which the window decoration includes a plurality ofmetallic thin film figures electrically insulated from each other.

For reference, in the present invention, the film member may beunderstood as a meaning including both a film member disposed on theoutermost front surface of the touch screen to be directly exposed tothe outside and a film member configuring an LCD panel in an in-cell oron-cell type touch screen. Further, the film member of the presentinvention may be attached on the front surface or the bottom of a caseof the electronic device or integrated with the case by a doubleinjection method when injection-molding the case, and may be used as aprotective film having an adhesive.

The window decoration is formed by a plurality of metallic thin filmfigures which is electrically insulated from each other. For reference,the metallic thin film figures may be understood as a meaning includingat least one shape of polygons, circles, ovals, and hairlines.

The sizes of the metallic thin film figures may be appropriately changeddepending on requirements and design specifications. Preferably, themetallic thin film figures may be provided with sizes capable ofminimizing interference in an operation of the touch screen.

As an example, the plurality of metallic thin film figures may be formedto have any one of a width, a horizontal length, a diameter, a longaxis, or a short axis which is relatively smaller than a pitch distanceas a distance where the signal lines of the touch screen are spacedapart from each other, and the signal lines of the touch screen may bedisposed on different metallic thin film shape areas which areelectrically insulated from each other in the pitch distance direction,respectively. More particularly, the plurality of metallic thin filmfigures may be formed to have any one of a width, a horizontal length, adiameter, a long axis, or a short axis within ½ of the pitch distance.The plurality of metallic thin film figures may be formed to have sizesof 0.1 μm to 0.5 mm. In such a structure, different signal lines may bedisposed in the metallic thin film figures which are electricallyinsulated from each other along the pitch distances to preventinterference caused by the metallic thin film figures made of the metal.

The finely curved parts corresponding to the window decoration may beformed on the transparent film so as to prevent reflection (a reflectivemirror effect) of light caused when the window decoration is made of themetal.

For reference, in the present invention, the case where that the finelycurved parts corresponding to the window decoration are formed on thetransparent film may be understood as the case where the windowdecoration and the finely curved parts are disposed in an overlappedarea in planar projection.

The finely curved parts may be formed on one surface or the othersurface of the transparent film according to requirements and designspecifications. As an example, the finely curved parts may be formed onthe lower surface (one surface) of the transparent film and the windowdecoration may be formed on one surface of the transparent film to coverthe finely curved parts. In some cases, the window decoration may beformed on the lower surface of the transparent film and the finelycurved parts may be formed on the upper surface of the transparent film.Unlike this, the finely curved parts may be provided on one surface ofthe transparent film to cover the window decoration.

Further, a non-processed flat part may be provided between the outermostedge and the transparent film and the finely curved parts. Herein, theflat part may be understood as a flat portion where the finely curvedparts are not formed (not processed or not treated).

Further, the film member for the electronic device may further include aprinting layer formed on the lower surface of the window decoration. Theprinting layer may express a new design effect through a texturedifference from the metallic thin film figures in addition to a lightleakage prevention effect.

Furthermore, the printing layer may be made of an electric conductivematerial to prevent static electricity from being accumulated in themetallic thin film figures, and preferably, the printing layer may bemade of a high resistive material of which the specific resistance islarger than 1 Ωcm. Further, the printing layer may be connected to aground of the electronic device so that the static electricityaccumulated in the printing layer is discharged.

Further, the film member according to the present invention may furtherinclude a metal line formed along the outermost edge of the transparentfilm, an oxide thin film layer formed on the transparent film, aninorganic thin film layer formed to cover the finely curved parts, and aprotective coating layer formed to cover the window decoration.

Advantageous Effects

According to the present invention, it is possible to preventmalfunction of a touch screen while expressing a design characteristicof metal texture by using the window decoration including the pluralityof metallic thin film figures.

Particularly, it is possible to prevent malfunction according tointerference caused by a metallic characteristic and mis-transmission ofthe signal while expressing an advanced design characteristic of metaltexture by using a plurality of metallic thin film figures which iselectrically insulated from each other as the window decoration.

Further, the finely curved parts are formed on the transparent film toprevent reflection (a reflective mirror effect) of light caused when thewindow decoration is made of the metal.

Further, the finely curved parts and the window decoration made of themetal are formed on different surfaces of the transparent film and thelight incident to the transparent film may be first scattered whilepassing through the finely curved parts to minimize reflecting of lightcaused by the window decoration.

Further, since the finely curved parts serving as the scattering layerwhere the light is scattered and the flat part serving as a mirrorsurface where the light is reflected coexist on the transparent film,the light is reflected at the outermost edge of the transparent film andthe light may be scattered at the inner edge thereof, thereby expressingan more advanced and unique design effect.

Further, the high-resistive printing layer is formed to cover the windowdecoration to prevent malfunction of the touch screen caused byaccumulating charges in the window decoration made of the metal.Further, the static electricity accumulated through the printing layerflows out to the ground of the electronic device to prevent malfunctionof the touch screen caused by the static electricity.

Further, the window decoration is formed in a multilayered metalstructure to more improve the window decoration effect.

Further, it is possible to improve a design characteristic and improve aproduct value. Therefore, it is possible to contribute to the advancedproduct and enhance satisfaction of customers.

DESCRIPTION OF DRAWINGS

FIG. 1 is a diagram for describing a film member for an electronicdevice according to the present invention.

FIG. 2 is a diagram for describing a window decoration as the filmmember for the electronic device according to the present invention.

FIGS. 3 to 5 are diagrams for describing a method for manufacturing afilm member for an electronic device according to the present invention.

FIG. 6 is a diagram for describing a film member for an electronicdevice according to another exemplary embodiment of the presentinvention.

FIGS. 7 to 9 are diagrams for describing a method for manufacturing afilm member for an electronic device according to another exemplaryembodiment of the present invention.

FIG. 10 is a diagram for describing a film member for an electronicdevice according to yet another exemplary embodiment of the presentinvention.

FIG. 11 is a diagram for describing a metal line, as the film member forthe electronic device according to the present invention.

FIG. 12 is a diagram for describing an oxide thin film layer as the filmmember for the electronic device according the present invention.

FIG. 13 is a diagram for describing an inorganic thin film layer as thefilm member for the electronic device according the present invention.

FIG. 14 is a diagram for describing a protective coating layer as thefilm member for the electronic device according the present invention.

FIG. 15 is a diagram for describing a laminated structure with thetransparent film, as the film member for the electronic device accordingthe present invention.

MODES OF THE INVENTION

Hereinafter, exemplary embodiments of the present invention will bedescribed in detail with reference to the accompanying drawings, but thepresent invention is not limited by the exemplary embodiments. Forreference, in the present invention, like reference numerals designatesubstantially like constituent elements, the contents disclosed indifferent drawings under the rule can be cited and described, and thecontents which are determined to be apparent to those skilled in the artor repeated can be omitted.

FIG. 1 is a diagram for describing a film member for an electronicdevice according to the present invention and FIG. 2 is a diagram fordescribing a window decoration as the film member for the electronicdevice according to the present invention. Further, FIGS. 3 to 5 arediagrams for describing a method for manufacturing the film member forthe electronic device according to the present invention.

Referring to FIGS. 1 and 2, a film member 10 for an electronic deviceaccording to the present invention includes a transparent film 100 and awindow decoration 200.

For reference, in the present invention, the electronic device mayinclude a smart phone, a tablet, a smart watch, a laptop computer, amonitor, and the like which have an electrostatic touch screen 500, andthe present invention is not limited or restricted by a type and acharacteristic of electronic device.

The film member 10 is installed on the front surface of the touch screen500, and the window decoration 200 is formed at the edge of the filmmember 10 to be used for covering a wire member (not illustrated) and acircuit board (not illustrated) which are disposed at the edge of thetouch screen 500.

For reference, in the present invention, as the touch screen 500, ageneral electrostatic touch screen 500 capable of static-electricallysensing a touch operation may be used. As an example, the electrostatictouch screen 500 may include a transmitter line 510 and a receiver line520 which are disposed in a laminated structure and signals of theelectrodes 510 and 520 may be transmitted through signal lines (wires)512 and 522 connected to the respective electrodes. For reference, thetransmitter electrode and the receiver electrode may be provided as astructure using a single or a plurality of films or coating layers, andthe present invention is not limited or restricted by the laminatedstructure of each electrode. In other words, the respective electrodesmay be formed on a single film (coating layer) or different films(coating layers) in a general laminated structure.

The transparent film 100 may be made of a general plastic material suchas polycarbonate having transmissivity and excellent strength, and thepresent invention is not limited or restricted by a material and acharacteristic of the transparent film 100. For reference, thetransparent film may be disposed on the front surface of the touchscreen to be directly exposed to the outside, but in some cases, othersubstrates can be laminated on the front surface of the transparentfilm.

The window decoration 200 is made of a metallic material and formed onone surface of the transparent film 100. Herein, one surface of thetransparent film 100 may be understood as a meaning including both thelower surface and the upper surface of the transparent film 100.Hereinafter, an example in which the window decoration 200 is formed onthe lower surface of the transparent film 100 will be described.

More particularly, the window decoration 200 is formed by a plurality ofmetallic thin film figures 203 which are electrically insulated fromeach other. For reference, the metallic thin film figures 203 may beunderstood as a meaning including at least one shape of a polygon, acircle, an oval, and a hairline.

As such, in the present invention, the window decoration 200 formed bythe plurality of metallic thin film figures 203 which is electricallyinsulated from each other is formed, thereby expressing a designcharacteristic of metal texture through the window decoration 200 andpreventing malfunction according to interference and mistransmission ofthe signals caused when the window decoration 200 is made of a metallicmaterial.

Hereinafter, a method for manufacturing the film member 10 for theelectronic device according to the present invention will be describedwith reference to FIGS. 3 to 5.

The method for manufacturing the film member 10 for the electronicdevice having the electrostatic touch screen 500 according to thepresent invention includes providing the transparent film 100, andforming the window decoration 200 made of a metallic material on onesurface of the transparent film 100. The window decoration 200 isprovided by including the plurality of metallic thin film figures 203which is electrically insulated from each other.

The window decoration 200 including the metallic thin film figures 203may be formed by various methods according to requirements.

As an example, referring to FIG. 3, first, the transparent film 100 isprovided, a metallic thin film layer 201 is formed on the transparentfilm 100, and then the metallic thin film layer 201 is partially removedto form the metallic thin film figures 203.

The metallic thin film layer 201 may be formed on the surface of thetransparent film 100 by a general method including thermal deposition,e-beam deposition, sputtering, and the like. The present invention isnot limited or restricted by a kind and a characteristic of the materialforming the metallic thin film layer 201. As an example, the metallicthin film layer 201 may be formed in a single-layered or multilayeredstructure by using at least one of chromium, aluminum, tin, palladium,molybdenum, and copper. Preferably, the metallic thin film layer 201 maybe formed with a thickness of 10 to 500 nm.

In some cases, before the metallic thin film layer is formed, an oxidethin film layer such as alumina (Al₂O₃), silicon dioxide (SiO₂), andtitanium dioxide (TiO₂) is coated on the surface of the transparentfilm, and then the metallic thin film layer may be formed on the surfaceof the oxide thin film.

In the exemplary embodiment of the present invention described andillustrated above, an example in which the metallic thin film layer 201is formed by a single metal layer is described. However, in some cases,the metallic thin film layer may be provided in a multilayered structuremade of different or similar materials, and the metallic thin filmfigures formed by removing the metallic thin film layer may also beprovided in the multilayered metal structure.

Thereafter, after a mask layer (not illustrated) is formed on thesurface of the metallic thin film layer 201, the metallic thin filmlayer 201 is partially etched by using the mask layer to form theplurality of metallic thin film figures 203 which is insulated from eachother, as illustrated in FIG. 4. For reference, the plurality ofmetallic thin film figures 203 may be formed by a generalphotolithography process. Further, when the metallic thin film figures203 are formed, a screen area may be etched together.

The plurality of metallic thin film figures 203 may be spaced apart fromeach other to correspond to the mask layer in the etching process, andthe metallic thin film figures 203 may be spaced apart from each otherto be electrically insulated from each other. By such a structure, themetallic thin film figures 203 may be electrically insulated from eachother, and a radio signal of the touch screen 500 may be prevented frombeing transferred to other adjacent signals through the metallic thinfilm figures 203. Furthermore, the mask layer used for etching themetallic thin film figures may be removed before a printing layer isformed, but in some cases, the printing layer may be formed withoutremoving the mask layer.

For reference, in the present invention, an example in which themetallic thin film figures 203 are formed in quadrangular shapes will bedescribed. In some cases, the metallic thin film figures may be formedin other polygonal shapes such as triangles and hexagons or formed inshapes such as circles, ovals, or amorphous shapes. Unlike this, themetallic thin film figures may be formed in hairline shapes.

Meanwhile, the sizes of the metallic thin film figures 203 may beappropriately changed depending on requirements and designspecifications.

Preferably, the metallic thin film figures 203 may be provided withsizes capable of minimizing interference in the touch panel sensor.

Preferably, referring to FIG. 2, the plurality of metallic thin filmfigures 203 is formed to have relatively smaller sizes than pitchdistances which are separation distances between the signal lines (forexample, 512) of the touch screen. The signal lines (for example, 512)of the touch screen may be disposed on different metallic thin filmshape areas which are electrically insulated from each other in pitchdistance directions, respectively. In other words, different signallines may be disposed in the metallic thin film figures which areelectrically insulated from each other along the pitch distances toprevent interference caused by the metallic thin film figures made ofthe metal.

Herein, the case where the metallic thin film shape has a relativelysmaller size than the pitch distance between the signal lines of thetouch screen may be understood as the case where a horizontal length W(alternatively, a width, a diameter, a long axis, and a short axis) ofthe metallic thin film shape has a relatively smaller size (P>W) than aseparation distance between any one signal line and the other signalline which are adjacent to each other. Meanwhile, a vertical length (alength in a perpendicular direction to the pitch distance direction) ofthe metallic thin film shape may be provided with various sizesregardless of the pitch distance between the signal lines.

Preferably, in order to prevent signal interference of the touch screen500, the size of the metallic thin film shape 300 may be formed within ½of a pitch P (a separation distance between wires) of the signal line ofthe touch screen 500. Generally, the metallic thin film shape 203 havinga size within approximately 1 mm may be used, but the size of themetallic thin film shape 203 may be adjusted according to the separationdistance (pitch distance) between the signal lines and other conditions.If the pitch of the signal line (wire) of a bezel part of the touchscreen 500 is 0.2 mm, the metallic thin film shape 203 may be formed tohave a width, a horizontal length, a diameter, a long axis, and a shortaxis within approximately 0.1 mm. More preferably, the plurality ofmetallic thin film figures may be formed to have sizes of 0.1 μm to 0.5mm.

Meanwhile, referring to FIG. 5, the film member 10 for the electronicdevice according to the present invention may include a printing layer300 formed on the lower surface of the window decoration 200 to coverthe window decoration 200. The printing layer 300 may express a newdesign effect through a texture difference from the metallic thin filmshape 203 in addition to a light leakage prevention effect.

The printing layer 300 may be formed through a general silkscreenprinting method and the like and provided to have a thickness ofapproximately 5 to 20 mm.

Further, the printing layer 300 may prevent static electricity frombeing accumulated in the metallic thin film figures 203. To this end,the printing layer 300 may be formed of an electrically conductivematerial, and preferably, the printing layer 300 may be made of a highresistive material having a specific resistance which is larger than 1Ωcm.

For reference, the printing layer 300 may have electric conductivity byadding at least one of carbon powder, metal powder, and nanoconductivepowder to printing ink. In some cases, the printing layer may beconfigured to have electric conductivity by other methods.

The printing layer 300 may be printed once or many times, and aformation condition of the printing layer 300 may be appropriatelychanged depending on requirements and design specifications.

Meanwhile, generally, the specific resistance of the metal is 10(−7)Ωcm, whereas the printing layer 300 has the specific resistance of 1 Ωcmto have a very high resistance as compared with the metal. Such aprinting layer 300 having the high resistance is characterized in thatthe signal of the touch screen 500 is not interfered while the staticelectricity is reduced.

Further, the printing layer 300 may be connected to a ground of theelectronic device so that the static electricity accumulated in theprinting layer 300 is discharged. As an example, the printing layer 300may be connected to the ground of the electronic device through generalFPCB (see 60 of FIG. 1) connection. Such a structure allows the staticelectricity accumulated through the printing layer 300 to flow out tothe ground of the electronic device, thereby preventing malfunction ofthe touch screen 500 caused by the static electricity.

Meanwhile, FIG. 6 is a diagram for describing a film member 10 for anelectronic device according to another exemplary embodiment of thepresent invention, and FIGS. 7 to 9 are diagrams for describing a methodfor manufacturing the film member 10 for the electronic device accordingto another exemplary embodiment of the present invention. Further, FIG.10 is a diagram for describing a film member 10 for an electronic deviceaccording to yet another exemplary embodiment of the present invention.Furthermore, the same and much the same parts as the aforementionedconfigurations designate the same or much the same reference numerals,and the detailed description thereof will be omitted.

Referring to FIGS. 6 to 9, the film member 10 for the electronic deviceaccording to another exemplary embodiment of the present inventionincludes a transparent film 100 and a window decoration 200, and finelycurved parts 102 corresponding to the window decoration 200 may beformed on the transparent film 100.

The finely curved parts 102 may be formed to prevent reflection (areflective mirror effect) of light caused when the aforementioned windowdecoration 200 is made of the metal.

For reference, in the present invention, the case where the finelycurved parts 102 corresponding to the window decoration 200 are formedon the transparent film 100 may be understood as the case where thewindow decoration 200 and the finely curved parts 102 are disposed in anoverlapped area in planar projection.

The finely curved parts 102 may be formed on one surface or the othersurface of the transparent film 100 according to requirements and designspecifications. As an example, the finely curved parts 102 may be formedon the lower surface (one surface) of the transparent film 100, and thewindow decoration 200 may be formed on one surface of the transparentfilm 100 to cover the finely curved parts 102.

The finely curved parts 102 may be formed by processing the surface ofthe transparent film 100 by using at least one processing method ofsandblasting, etching, plasma-etching, laser processing, and mechanicalprocessing, and the present invention is not limited or restricted bythe processing method of the finely curved parts 102. In some cases,without surface processing of the transparent film, a polymer resinlayer having a curve or a scattering layer including micro beads isformed on the surface of the transparent film, and thus the scatteringlayer may serve as the finely curved parts. The scattering layer may beprovided by mixing and then curing micro beads in a general resin suchas an UV curing resin or ink.

Referring to FIG. 7, first, after a masking pattern 410 is formed on thetransparent film 100 through a printing or photomasking process, asillustrated in FIG. 8, the finely curved parts 102 having random shapesand sizes of 1 to 10 mm may be formed by sandblasting a part without themasking pattern 410. On the other hand, in the case of forming thefinely curved parts 102 by laser processing and the like, the finelycurved parts 102 may be formed to have regular distances and sizes.

Furthermore, the part with the finely curved parts 102 may have a hazyeffect that looks cloudy in addition to a scattering effect in which thelight is scattered.

For reference, the transparent film 100 may be provided to correspond toat least one touch screen 500 and tailored and provided by forming thefinely curved parts 102 and then removing the making pattern 410.

Further, a flat part 104 may be provided between the outermost edge ofthe transparent film 100 and the finely curved parts 102. Herein, theflat part 104 may be understood as a flat portion in which the finelycurved parts 102 are not formed (not processed or not treated). Forexample, the flat part 104 may be provided to have a width withinapproximately 1 mm so as to minimize the reflection of light through theflat part 104.

The flat part 104 may be provided by forming the masking pattern 410 atthe portion corresponding to the flat part 104 and removing the maskingpattern 410 after forming the finely curved parts 102, when forming themasking pattern 410 for forming the finely curved parts 102.

As such, according to the present invention, the finely curved parts 102and the flat part 104 are provided on the transparent film 100 toprevent the reflection of light caused by the window decoration 200 madeof the metal. Simultaneously, the light is reflected at the outermostedge to express a unique design effect.

Referring back to FIG. 6, after the finely curved parts 102 are formed,the window decoration 200 may be formed to cover the finely curved parts102 and the flat part 104 together.

Further, referring to FIG. 9, after the window decoration 200 is formedto cover the finely curved parts 102 and the flat part 104 of thetransparent film 100, the printing layer 300 may be formed to cover thewindow decoration 200.

Meanwhile, in the exemplary embodiment of the present inventiondescribed above, an example in which the finely curved parts and thewindow decoration are formed on the same surface (lower surface) of thetransparent film is described, but in some cases, the finely curvedparts and the window decoration may be configured to be formed onopposite surfaces of the transparent film.

That is, referring to FIG. 10, the window decoration 200 may be formedon the lower surface of the transparent film 100, and finely curvedparts 102′ and a flat part 104′ may be formed on the upper surface ofthe transparent film 100 corresponding to the window decoration 200.Similarly, the printing layer 300 may be formed below the windowdecoration 200 to cover the window decoration 200. In such a structure,light incident to the transparent film 100 may be first scattered bypassing through the finely curved parts 102′ to minimize the reflectionof light caused by the window decoration 200.

In some cases, the window decoration and the finely curved parts areformed on the same surface (for example, the lower surface) of thetransparent film, but after the window decoration is first formed on thelower surface of the transparent film, the finely curved parts may beformed to cover the lower surface of the window decoration. In thiscase, the aforementioned scattering layer may be used as the finelycurved parts.

Further, in the exemplary embodiment of the present invention describedand illustrated above, an example in which the window decoration 200 isdirectly formed on the surface of the transparent film 100 is described.However, in some cases, after the window decoration is formed on a coverglass of the electronic device, the transparent film may be attached tothe cover glass. Further, unlike this, a coating layer made of ametallic material or other materials may be formed to cover the windowdecoration.

Further, FIG. 11 is a diagram for describing a metal line as the filmmember for the electronic device according the present invention, FIG.12 is a diagram for describing an oxide thin film layer as the filmmember for the electronic device according the present invention, andFIG. 13 is a diagram for describing an inorganic thin film layer as thefilm member for the electronic device according the present invention.Further, FIG. 14 is a diagram for describing a protective coating layeras the film member for the electronic device according the presentinvention, and FIG. 15 is a diagram for describing a laminated structurewith a glass substrate as the film member for the electronic deviceaccording the present invention. Furthermore, the same and much the sameparts as the aforementioned configurations designate the same or muchthe same reference numerals, and the detailed description thereof willbe omitted.

Referring to FIG. 11, the film member for the electronic deviceaccording to the present invention may include a metal line 500 formedalong the outermost edge of the transparent film 100.

Since the metal line 500 is formed in an area which does not interferewith the signal lines, the metal line 500 needs not to be provided asthe insulated structure like the metallic thin film figures 203. As anexample, the metal line 500 may be formed in an area corresponding tothe area with the aforementioned flat part and made of the same orsimilar materials as or to the aforementioned metallic thin filmfigures.

The metal line 500 may reflect the metallic light at the outermost edgeof the transparent film 100 to express a more advanced and unique designeffect.

Referring to FIG. 12, the film member for the electronic deviceaccording to the present invention may include an oxide thin film layer600 formed on the transparent film 100, and the metallic thin filmfigures 203 forming the window decoration may be formed on the surfaceof the oxide thin film layer 600.

The oxide thin film layer 600 may express much various colors by arefractive effect of light. The oxide thin film layer 600 may beprovided by coating general metal oxide such as TiO₂, SiO₂, and Al₂O₃ ina single-layered or laminated structure, and may be formed by generale-beam evaporation, sputtering, thermal deposition, PECVD, and the like.As an example, the oxide thin film layer may be generally coated with athickness of about 10 to 100 nm.

Further, the printing layer 300 (for example, a black, white, or colorprinting layer) may be formed on the surface of the metallic thin filmfigures 203. In such a structure, when the thickness of the metallicthin film shape 203 is small, the printed color may be transmitted andthe transmitted color is mixed with a multi-coating color of the oxidethin film layer 600 to show a final color, and thus the printed colorsmay be more variously formed.

Referring to FIG. 13, the film member for the electronic deviceaccording to the present invention may include an inorganic thin filmlayer 700 formed to cover the finely curved parts 102.

The inorganic thin film layer 700 may be provided to have a differentrefractive index from the finely curved parts 102. As the inorganic thinfilm layer 700, a transparent thin film such as a metallic oxide film, ametallic nitride film, and a metallic fluoride film may be used. As anexample, the inorganic thin film layer may be provided by coatingvarious types of thin films consisting of SiO₂ (1.46), Al₂O₃ (1.7), TiO₂(2.45), Ta₂O₅ (2.2), ZrO₂ (2.05), HfO₂ (2.0), Nb₂O₅ (2.33), Si₃N₄(2.02), MgF₂ (1.38), and the like in the single-layered or laminatedstructure by a method of sputtering, e-beam evaporation, PECVD, and thelike.

The inorganic thin film layer 700 having a different refractive indexfrom the finely curved parts 102 allows the light incident to themetallic thin film figures to be incident in much various forms toexpress an advanced design characteristic.

Referring to FIG. 14, the film member for the electronic deviceaccording to the present invention may include a protective coatinglayer 800 formed on one surface of the transparent film 100 to cover thesurface of the window decoration.

As an example, when the protective coating layer 800 is formed in astructure where the metallic thin film figures 203 are exposed to theoutside, the protective coating layer 800 may be formed to cover thesurface of the metallic thin film figures in order to protect themetallic thin film figures 203. Further, the protective coating layer800 is formed to cover the surface of the metallic thin film figures 203to minimize the reflection of light of the metal. In some cases, theprotective coating layer and the window decoration may be disposed onopposite surface of the transparent film, respectively.

Referring to FIG. 15, the film member for the electronic deviceaccording to the present invention may be provided to be laminated onthe cover glass 110, and the metallic thin film figures 203 forming thewindow decoration may be formed on the cover glass 110 to be provided toone surface of the transparent film 100.

For reference, in the present invention, the film member may beunderstood as a meaning including both a glass disposed on the outermostfront surface of the touch screen to be directly exposed to the outsideand a glass configuring an LCD panel in an in-cell or on-cell type touchscreen.

That is, the window decoration may be formed on the cover glass 110, andthe finely curved parts 102 may be formed on the transparent film 100laminated on the cover glass 110. For reference, in the exemplaryembodiment of the present invention, an example in which the finelycurved parts are formed on the transparent film and the windowdecoration is formed on the cover glass is described. However, in somecases, the wind decoration may be formed on the transparent film and thefinely curved parts may be formed on the cover glass.

The transparent film 100 may be adhered to the cover glass 110 by usinga general adhesive layer 106 or an adhesive film and the printing layer300 may be formed on the lower surface of the cover glass 110. Unlikethis, the window decoration and the finely curved parts are formed onthe transparent film and the printing layer may be formed on the coverglass.

As described above, the present invention has been described withreference to the preferred embodiments. However, it will be appreciatedby those skilled in the art that various modifications and changes ofthe present invention can be made without departing from the spirit andthe scope of the present invention which are defined in the appendedclaims and their equivalents.

1. A film member for an electronic device used for an electrostatictouch screen in the electronic device having the electrostatic touchscreen, the film member comprising: a transparent film; and a windowdecoration made of a metallic material and provided on one surface ofthe transparent film, wherein the window decoration includes a pluralityof metallic thin film figures electrically insulated from each other. 2.The film member for an electronic device of claim 1, finely curved partscorresponding the window decoration are formed on the transparent film.3. The film member for an electronic device of claim 2, wherein thefinely curved parts are formed on one surface of the transparent filmand the window decoration is provided on the one surface of thetransparent film to cover the finely curved parts.
 4. The film memberfor an electronic device of claim 2, wherein the finely curved parts areprovided on the other surface of the transparent film.
 5. The filmmember for an electronic device of claim 2, wherein the finely curvedparts are provided on one surface of the transparent film to cover thewindow decoration.
 6. The film member for an electronic device of claim2, wherein a flat part is provided between the outermost edge of thetransparent film and the finely curved parts.
 7. The film member for anelectronic device of claim 2, wherein the finely curved parts are formedby processing the surface of the transparent film by using at least oneprocessing method of sandblasting, etching, plasma etching, laserprocessing, and mechanical processing or provided by forming a polymerresin layer having a curve on the surface of the transparent film or ascattering layer including micro beads.
 8. The film member for anelectronic device of claim 1, wherein the plurality of metallic thinfilm figures is formed by at least one form of polygons, circles, ovals,and hairlines which are electrically insulated from each other.
 9. Thefilm member for an electronic device of claim 1, wherein the pluralityof metallic thin film figures is formed to have any one of a width, ahorizontal length, a diameter, a long axis, or a short axis which isrelatively smaller than a pitch distance as a distance where the signallines of the touch screen are spaced apart from each other, and thesignal lines of the touch screen are disposed on different metallic thinfilm figure areas which are electrically insulated from each other inthe pitch distance direction, respectively.
 10. The film member for anelectronic device of claim 9, wherein the plurality of metallic thinfilm figures has any one of a width, a horizontal length, a diameter, along axis, or a short axis within ½ of the pitch distance.
 11. The filmmember for an electronic device of claim 1, wherein the plurality ofmetallic thin film figures have sizes of 0.1 μm to 0.5 mm andthicknesses of 10 to 500 nm.
 12. The film member for an electronicdevice of claim 1, wherein the plurality of metallic thin film figuresis provided in a single-layered or multilayered structure by using atleast one of chromium, aluminum, tin, palladium, molybdenum, and copper.13. The film member for an electronic device of claim 1, furthercomprising: a printing layer formed on the lower surface of the windowdecoration.
 14. The film member for an electronic device of claim 13,wherein the printing layer is made of an electric conductive material.15. The film member for an electronic device of claim 14, wherein theprinting layer has a specific resistance larger than 1 Ωcm.
 16. The filmmember for an electronic device of claim 14, wherein the printing layeris connected to a ground of the electronic device.
 17. The film memberfor an electronic device of claim 1, further comprising: a metal lineformed along the outermost edge of the transparent film.
 18. The filmmember for an electronic device of claim 1, further comprising: an oxidethin film layer formed on the transparent film, wherein the windowdecoration is formed on the surface of the oxide thin film layer. 19.The film member for an electronic device of claim 2, further comprising:an inorganic thin film coating layer formed to cover the finely curvedparts.
 20. The film member for an electronic device of claim 1, furthercomprising: a protective coating layer formed on one surface of thetransparent film to cover the window decoration.
 21. The film member foran electronic device of claim 1, wherein the transparent film isprovided to be laminated on cover glass of the electronic device, andthe window decoration is formed on the cover glass to be provided on onesurface of the transparent film.